Process for producing a water-soluble cellulose derivative having a reduced content of water-insoluble particles
US-2017355782-A1 · Dec 14, 2017 · US
Post-etherification treatments of chemical or physical type, {e.g. mixed etherification in two steps}, including purification
Post-etherification treatments of chemical or physical type, {e.g. mixed etherification in two steps}, including purification · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C08B11/20 |
| Official title | Post-etherification treatments of chemical or physical type, {e.g. mixed etherification in two steps}, including purification |
| Display label | Post-etherification treatments of chemical or physical type, {e.g. mixed etherification in two steps}, including purification |
| Total patents | 187 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 29 |
| 2016 | 25 |
| 2017 | 16 |
| 2018 | 24 |
| 2019 | 11 |
| 2020 | 24 |
| 2021 | 11 |
| 2022 | 18 |
| 2023 | 9 |
| 2024 | 4 |
| 2025 | 15 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing water-soluble nonionic cellulose ether powder having high bulk density
US-2017283513-A1 · Oct 5, 2017 · US
Composition comprising an organic diluent and a cellulose ether
US-9757465-B2 · Sep 12, 2017 · US
Hemi-aminal ethers and thioethers of N-alkenyl cyclic compounds
US-9751866-B2 · Sep 5, 2017 · US
Porous water-soluble nonionic cellulose ether having excellent solubility and method for producing the same
US-2017114203-A1 · Apr 27, 2017 · US
Esterified cellulose ethers of very low viscosity
US-9617351-B2 · Apr 11, 2017 · US
Polysaccharide derivatives and cross-metathesis processes for preparing them
US-2016376379-A1 · Dec 29, 2016 · US
Novel esterified cellulose ethers of high molecular weight and homogeneity
US-2016347866-A1 · Dec 1, 2016 · US
Hydroxyethyl cellulose grafted acrylic latex
US-9499680-B2 · Nov 22, 2016 · US
Method for producing water-soluble nonionic cellulose ether excellent in storage stability
US-9487594-B2 · Nov 8, 2016 · US
Hair Fixatives Including Cellulose Ether Based Polyglucose Polymers
US-2016303023-A1 · Oct 20, 2016 · US
Cationized glycerolated cellulose
US-9456977-B2 · Oct 4, 2016 · US
Process of preparing an ester of a cellulose ether
US-9453081-B2 · Sep 27, 2016 · US
Process for producing cellulose derivatives of high bulk density and good flowability
US-2016256390-A1 · Sep 8, 2016 · US
Dissolution and processing of cellulose
US-2016251451-A1 · Sep 1, 2016 · US
Method for dehydrating hydrous low-substituted hydroxypropyl cellulose and method for producing low-substituted hydroxypropyl cellulose by using same
US-9428590-B2 · Aug 30, 2016 · US
Method for producing alkali cellulose
US-9416198-B2 · Aug 16, 2016 · US
A process for recovering an esterified cellulose ether from a reaction product mixture
US-2016222133-A1 · Aug 4, 2016 · US
Surface-modified cellulose nanofibres, bio composite resin composition and method for producing the same
US-2016208087-A1 · Jul 21, 2016 · US
Method for preparing cellulose ether having low degree of polymerization and cellulose ether prepared thereby
US-9382336-B2 · Jul 5, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08B11/20?
- CPC C08B11/20 is the Cooperative Patent Classification code for “Post-etherification treatments of chemical or physical type, {e.g. mixed etherification in two steps}, including purification.”
- How many patents are filed under CPC C08B11/20 (Post-etherification treatments of chemical or physical type, {e.g. mixed etherification in two steps}, including purification)?
- Our database includes 187 publications tagged with this CPC code.
- Is patent activity under CPC C08B11/20 growing?
- Publication counts under this code: 4 in 2024 vs 15 in 2025 (latest complete years).